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Rocket. In the fuse end of the rocket a medium powder is mixed with metal filings packed under tremendous pressure. The ignited gases rush to escape through the rear, push against the air and drive the rocket upward. As it goes the metal filings become hot, spew out the back making the tail. When the fire breaks into the front chamber, it explodes a charge of strong powder which bursts the shell, showers balls similar to those in the Roman candle.
Aerial Bombs. These are fired from a mortar much as a cannon ball. When they reach a certain height in the air a time fuse burns out, causes the explosion.